This topic is locked
Yeah, something must be pilled again 
North Korean Iron Dragon
North Korea sided with Soviets just after their victory over the Allies and Yuri's Epsilon, to control movements of their neighbour South Korea. Due to mergence of Korea and alliance of Soviets and North part of island, Red Army had to incorporate new country into their 'Iron Curtain Project'. To keep their borders safe and well protected, North Korea spent most funds and time to develop a huge site of Iron Curtain Devices near the border and in their country.
High development of the invulnerability technology inspired North Korean technicians to create a new way of using Iron Curtain. As the device was currently used to protection, they have decided to make offensive force based on it. Energy created in device could either make metals invulnerable, either destroy bonds linking atoms of the material. The second way was used in their secret project called 'Iron Dragon'.
The Iron Dragon is claimed to be an artillery unit, but it can't be concerned as a siege one as it doesn't inflict too much damage with it's charged energy balls. After ball impacts the ground, iron energy is no longer under control as the small "cooling" device breaks and allows energy to reach high temperature. Explosion breaks bonds in metals, what makes Iron Dragon perfect anti-tank unit. Temperature causes painful human death as well, but unluckily, this weapon is not effective against concrete nor wooden structures. Immunity of metal defense structures for iron gun is still a mystery for North Korean sciencists though.
